INFICON T-Guard Leak Detection Sensor Interface description - Manual (Page 17)

RS232 ASCII Interface Protocol
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2.3.1 Error Messages
The following error messages may be received from T-Guard:
2.4 Examples of programming
Every command must be terminated by the two bytes
Carriage Return (CR, ASCII 13, \r) and Line Feed (LF, ASCII 10, \n), in this order.
The response you receive from T-Guard will also be terminated like this.
Error
number Error message Statement
OK ERR_OK command executed
E01 ERR_CMD_START wrong command start (no " * ")
E02 ERR_ERR_BLANK illegal blank
E03 ERR_CMD_WORD_1 command word 1 illegal
E04 ERR_CMD_WORD_2 command word 2 illegal
E05 ERR_CMD_WORD_3 command word 3 illegal
E06 ERR_DISABLED control via RS232 not enabled
E07 ERR_ARGUMENT argument wrong
E08 ERR_NO_DATA no data available
E09 ERR_OVERFLOW buffer overflow
E10 ERR_INVALID command currently invalid
E11 ERR_NO_QUERY no query allowed
E12 ERR_QUERY only query allowed
E13 ERR_NOT_IMPLEMENTED not yet implemented
Command sent to
T-Guard
Response received
from T-Guard
Content
*STAT:MEAS? READY status of the unit
*STATUS:MEAS? READY status of the unit
*READ? 1.00E-2 mbar*l/s leak rate in chosen unit of
measurement
*READ:SCCM? 0.6 sccm leak rate in different
unit of measurement
*START OK start measurement
*CONF:AV? 2 request value of volume
*CONF:AV 5 OK set volume